Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
lieu tinh » trieu tinh, diep tinh, bien tinh
cua thong » cua thuong, cua khong, cua tong
tung cua » trung cua, tuong cua, dung cua
bai toan » bai tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (lieu tinh)) - thanh tung cua thong cong ((tan tran) or (bai toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (lieu tinh)) - thanh tung cua thong cong ((tan tran) OR (bai toan)) tap.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (lieu tinh)) - thanh tung cua thong cong ((tan tran) or (bai toan)) tap*.